Risk Assessment of Nishimura et al for Valvular Heart Disease

Description

Nishimura et al performed risk assessment on patients with valvular heart disease based on a clinical evaluation.

Parameters:

(1) Society of Thoracic Surgeons Predicted Risk of Mortality (STS PROM) in percent at 1 year for death or major mortality

(2) frailty

(3) major organ system compromise not to be improved postoperatively

(4) procedure-specific impediment (calcified ascending aorta, cardiac malformation, etc)

Parameter	Finding	Grade
STS PROM	< 4%	1
	4-8%	2
	> 8% (8.1 to 50)	3
	> 50%	4
frailty	none	1
	mild	2
	moderate to severe	3
major organ dysfunction	none	1
	1	2
	2	3
	>=3	4
procedure-specific impediment	none	1
	possible	2
	mild	3
	severe	4

where:

• For procedure-specific impediment possible procedure-specific impediment was listed for intermediate and high risk. The entry under high risk was changed to mild since prohibitive risk was severe.

• The time interval for the STS-PROM is not clearly stated. The assumption is for a 1 year interval.

predicted risk level =

= MAX(points for all 4 parameters)

Level	Risk
1	low
2	intermediate
3	high
4	prohibitive

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Risk Assessment of Nishimura et al for Valvular Heart Disease

Description

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